本文介绍了提高牙轮钻头转速的试验研究。通过试验和实践证明。对牙轮钻头滑动轴承进行渗硼强化,并采用与之适应的润滑脂和密封圈以及合理的加工工艺,可使钻头转速由原来的60rad/min提高到120rad/min左右,大大提高了钻井效率,降低了钻井成本。 This paper presents an experimental study to improve the speed of roller cone bit. Proved by experiment and practice. Boring the roller bearing bit boring and strengthening, and use the appropriate adaptation of the grease and the seal ring and the reasonable processing technology, the bit speed from 60rad / min to 120rad / min or so, greatly improving the drilling efficiency , Reducing drilling costs.